165271107 has 4 divisors (see below), whose sum is σ = 220361480. Its totient is φ = 110180736.

The previous prime is 165271103. The next prime is 165271121. The reversal of 165271107 is 701172561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165271107 - 2² = 165271103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165271103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27545182 + ... + 27545187.

It is an arithmetic number, because the mean of its divisors is an integer number (55090370).

Almost surely, 2^165271107 is an apocalyptic number.

165271107 is a deficient number, since it is larger than the sum of its proper divisors (55090373).

165271107 is an equidigital number, since it uses as much as digits as its factorization.

165271107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55090372.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 165271107 is about 12855.7810731204. The cubic root of 165271107 is about 548.7808887368.

The spelling of 165271107 in words is "one hundred sixty-five million, two hundred seventy-one thousand, one hundred seven".